Mobile Signal Cancellation Device.
ABSTRACT
Mobile Signal Cancellation Device is a device that can be used to prevent mobile
phone from receiving and transmitting radio frequency signal within GSM range. The
device will generate the same signal frequency but out of phase by 180 The transmitted
0
•
signal will effectively destruct or cancel the received signal from the antenna of the
device. There is deterioration of mobile signal where signal interference may occur.
Besides, there are some places where any incoming and outgoing call may irritate or
disturbing the people around. The mobile signal also has been off limits in highly secure
places where any incoming or outgoing data and information are strictly prohibited. The
main objective of the project is to design and built a 900MHz frequency generator and a
variable coverage transmitter. Both 900MHz frequency generator and variable coverage
transmitter will be integrated to each other where finally, a cancellation device within
900MHz will be resultant. The outcome of the project is a device that will detect any
incoming mobile signal and will transmit the same signal but in different phase by 180
0
•
© Universiti Teknikal Malaysia Melaka
V II
Mobile Signal Cancellation Device is a device that can be used to prevent mobile
phone from receiving and transmitting radio frequency signal within GSM range. The
device will generate the same signal frequency but out of phase by 180 The transmitted
0
•
signal will effectively destruct or cancel the received signal from the antenna of the
device. There is deterioration of mobile signal where signal interference may occur.
Besides, there are some places where any incoming and outgoing call may irritate or
disturbing the people around. The mobile signal also has been off limits in highly secure
places where any incoming or outgoing data and information are strictly prohibited. The
main objective of the project is to design and built a 900MHz frequency generator and a
variable coverage transmitter. Both 900MHz frequency generator and variable coverage
transmitter will be integrated to each other where finally, a cancellation device within
900MHz will be resultant. The outcome of the project is a device that will detect any
incoming mobile signal and will transmit the same signal but in different phase by 180
0
•
© Universiti Teknikal Malaysia Melaka
V II